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          1
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          99.37－10.21＝89.16
          67.66＋19.9＝87.56
          68.61＋30.79＝99.4
      
      
          45×5＋10＝235
          76÷4＋7＝26
          76－11＝65
      
      
          179÷5＝35 …… 4
          94－51＝43
          15＋(81×50)＝4065
      
      
          35×25＝875
          51.07＋90.57＝141.64
          47×34＝1598
      
      
          82×(44－8)＝2952
          16÷2＋85＝93
          19＋(38÷2)＝38
      
      
          42＋41＝83
          66×(98＋26)＝8184
          80×29＝2320
      
      
          (48÷3)＋24＝40
          51.01－6.42＝44.59
          62÷2＋18＝49
      
      
          280÷4＝70
          61.46－35.13＝26.33
          63÷9＝7
      
      
          $\frac{4}{47}$＋$\frac{23}{47}$＝$\frac{27}{47}$
          $\frac{4}{7}$－$\frac{3}{7}$＝$\frac{1}{7}$
          $\frac{55}{57}$－$\frac{2}{57}$＝$\frac{53}{57}$
      
      
          $\frac{19}{27}$＋$\frac{4}{27}$＝$\frac{23}{27}$
          $\frac{41}{69}$＋$\frac{17}{69}$＝$\frac{58}{69}$
          $\frac{49}{53}$－$\frac{1}{53}$＝$\frac{48}{53}$
      
  
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    <h1 class="title">25070210103917</h1>

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        <time datetime="2025-07-02 10:10:40 &#43;0800 CST">2025年07月02日</time>
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          ·
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          35字
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          1分钟
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          <th>1</th>
          <th>2</th>
          <th>3</th>
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  </thead>
  <tbody>
      <tr>
          <td>99.37－10.21＝<font color=red size=4>89.16</font></td>
          <td>67.66＋19.9＝<font color=red size=4>87.56</font></td>
          <td>68.61＋30.79＝<font color=red size=4>99.4</font></td>
      </tr>
      <tr>
          <td>45×5＋10＝<font color=red size=4>235</font></td>
          <td>76÷4＋7＝<font color=red size=4>26</font></td>
          <td>76－11＝<font color=red size=4>65</font></td>
      </tr>
      <tr>
          <td>179÷5＝<font color=red size=4>35 …… 4</font></td>
          <td><font color=red size=4>94</font>－51＝43</td>
          <td>15＋(81×50)＝<font color=red size=4>4065</font></td>
      </tr>
      <tr>
          <td>35×25＝<font color=red size=4>875</font></td>
          <td>51.07＋90.57＝<font color=red size=4>141.64</font></td>
          <td>47×34＝<font color=red size=4>1598</font></td>
      </tr>
      <tr>
          <td>82×(44－8)＝<font color=red size=4>2952</font></td>
          <td>16÷2＋85＝<font color=red size=4>93</font></td>
          <td>19＋(38÷2)＝<font color=red size=4>38</font></td>
      </tr>
      <tr>
          <td><font color=red size=4>42</font>＋41＝83</td>
          <td>66×(98＋26)＝<font color=red size=4>8184</font></td>
          <td>80×29＝<font color=red size=4>2320</font></td>
      </tr>
      <tr>
          <td>(48÷3)＋24＝<font color=red size=4>40</font></td>
          <td>51.01－6.42＝<font color=red size=4>44.59</font></td>
          <td>62÷2＋18＝<font color=red size=4>49</font></td>
      </tr>
      <tr>
          <td>280÷4＝<font color=red size=4>70</font></td>
          <td>61.46－35.13＝<font color=red size=4>26.33</font></td>
          <td>63÷9＝<font color=red size=4>7</font></td>
      </tr>
      <tr>
          <td>$\frac{4}{47}$＋$\frac{23}{47}$＝<font color=red size=4>$\frac{27}{47}$</font></td>
          <td>$\frac{4}{7}$－$\frac{3}{7}$＝<font color=red size=4>$\frac{1}{7}$</font></td>
          <td>$\frac{55}{57}$－$\frac{2}{57}$＝<font color=red size=4>$\frac{53}{57}$</font></td>
      </tr>
      <tr>
          <td>$\frac{19}{27}$＋$\frac{4}{27}$＝<font color=red size=4>$\frac{23}{27}$</font></td>
          <td>$\frac{41}{69}$＋$\frac{17}{69}$＝<font color=red size=4>$\frac{58}{69}$</font></td>
          <td>$\frac{49}{53}$－$\frac{1}{53}$＝<font color=red size=4>$\frac{48}{53}$</font></td>
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